Paul Hembery has revealed that the 2013 Pirelli tyres will change the aerodynamics for the teams next season.

Pirelli is supplying two sets of prototype tyres for Friday practice at the Brazilian Grand Prix in order to give the teams an opportunity to gather some data around which to develop their 2013 cars. However, while Hembery said the regulations meant the cars themselves are not due to change too much, the new profile tyre will have an effect on the aerodynamics at the rear of the car.

"Well the cars at least this year are not going to change too much between this year and next year," Hembery told ESPN exclusively. "From that point of view we're hopeful of not having any big surprises and that I think for the teams is also a positive. Although we know that the changes we've made will have an influence on things like aerodynamics for the teams; it will deflect more, the rear tyre in particular."

Hembery added that he suspects some teams not chasing championship positions could focus on analysing the tyres fully on Friday.

"I think for the teams point of view it is an opportunity to gain a lot of data, and those who are maybe not competing for points or a position in the championship then will use that to take home as much data as possible."

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